Mechanics

VACUUM LEAKS

2001 Lincoln LS

Engine Mechanical problem
2001 Lincoln LS 6 cyl Four Wheel Drive Automatic 71000 miles

codes p0171 and p0174 and p0303 changed mass airflow sensor, oil and filter spark plugs, fuel filter, icd, o2 sensors on both sides. I hear a leaking like hissing noise when I start the car and it continues, car eventually idles up and down then dies. What is this
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Rozzz9
September 26, 2010.




A hissing noise normally indicates a leaky vacuum hose. Where is the noise coming from? Engine compartment etc?

Bluelightnin6
Oct 20, 2010.


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